Name:	hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAfterOneThroughFiveYearsAmortizedCost
Namespace Prefix:	hig_
Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Represents the fair value of debt securities in a continuous unrealized loss position, which are expected to mature after one year and through five years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

Name:	hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAfterOneThroughFiveYearsFairValue
Namespace Prefix:	hig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the debt securities in a continuous unrealized loss position, which are expected to mature after ten years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

Name:	hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAfterTenYearsAmortizedCost
Namespace Prefix:	hig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the fair value of debt securities in a continuous unrealized loss position, which are expected to mature after ten years from the balance sheet date and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

Name:	hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAfterTenYearsFairValue
Namespace Prefix:	hig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the debt securities in a continuous unrealized loss position grouped by maturity dates and which are categorized neither as held-to-maturity nor trading securities.

No definition available.

Name:	hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAmortizedCost
Namespace Prefix:	hig_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	hig_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionContinuousUnrealizedLossPositionAmortizedCostAbstract
Namespace Prefix:	hig_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 320
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=75027294&loc=d3e22002-158495

Name:	us-gaap_AssetsHeldByInsuranceRegulators
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAggregateLossesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563